Conor McGregor's dad has dismissed claims that his son was caught up in a brawl with a gangster's relative as "absolute nonsense" and insists his family has "nothing to fear".

Tony McGregor said his family were not under threat from the Kinahan cartel, led by the 'Dapper Don' Christy Kinahan and his son Daniel.

He spoke out after allegations that his UFC champ son had been involved in a punch-up with a middle aged man in a Dublin bar on Sunday.

It was claimed that the man in his 50s – with links to the Kinahan drugs gang – was punched twice in the face at the Black Forge Inn, Crumlin.

Reports emerged on social media, claiming the Kinahans were seeking compensation of €900k (£790,000) from McGregor, who is thought to have earned $100million (£740million) from his boxing match with Floyd Mayweather in August – and that he was under threat.

Conor McGregor's dad Tony said claims his family was not under threat from gangsters (Image: Getty)

Reports on social media claimed McGregor had been involved in a punch-up with men linked to gangsters (Image: Getty)

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McGregor fuelled rumours by posting a video of himself with his coat over his face and his hood up with the caption “The celebrity”.

Meanwhile, UFC chief Dana White played down claims Conor McGregor was involved in a pub brawl.

He insisted the reports were not true adding that he has not received any information regarding McGregor’s involvement in an alleged bar fight.

He added: “I don’t think it’s true, because if it was true, it would be big. Conor can walk down the street and it’s big news now.

“If this were true, I just have to believe it would be off-the-charts crazy. If it’s true, we’ll end up finding out. I can’t chase all these things. If it’s true, we’ll get it figured out and go from there.”

Reports circulating suggest the MMA champ allegedly stepped in when another man was punched in the head.

There is no suggestion McGregor was socialising with criminals.

The reports seem to indicate the alleged altercation arose as a result of an accidental encounter​ between the star and the other parties to the row.

The Irish Mirror contacted McGregor’s representatives but did not get a response.

Who are the Kinahan Cartel?

Headed by the 'Dapper Don' Christy Kinahan and his son Daniel, the Kinahan Cartel are suspected of being Ireland's biggest importer of cocaine.

They have been linked to several murders and money laundering, and have been involved in a well-publicised, bloody feud with the Hutch family.

Gary Hutch, a suspected police informant, was reportedly shot on the orders of the Kinahan gang in Malaga in late 2015.

His uncle, Gerry 'The Monk' Hutch, a prolific armed robber, is said to have taken the killing personally, refusing a 'sit-down' with the Kinahans.

In January 2016, hitmen reportedly working for Monk posed as police and attacked a boxing weigh-in at Dublin's Regency Hotel, apparently targeting one of Christy Kinahan's right hand men.

The Kinahans are said to have responded by carrying out a number of assassinations, including that of Monk's brother, Eddie Hutch.

The Kinahan Cartel have also been linked to the murder of three members of the New IRA.